CN114032953A - Sinking construction device for assembled underground building - Google Patents

Abstract

The invention discloses a sinking construction device for an assembled underground building, which relates to the technical field of underground building construction.

Description

Sinking construction device for assembled underground building

Technical Field

The invention relates to the technical field of underground building construction, in particular to a sinking construction device for an assembled underground building.

Background

The existing large-scale underground building is constructed by an open cut method commonly used, the open cut method needs to firstly open a foundation pit for supporting, then the underground building is poured or assembled in the foundation pit, the bottom rock soil is excavated by adopting a chain cutter at present, the whole sinking technical scheme is adopted, and the sinking construction without a hanging device has the following defects because the self load of the underground building is too heavy: the inclination and the deviation are easy to generate, a deviation rectifying device needs to be additionally arranged when the device sinks, and once the deviation is generated, the deviation rectification is difficult to realize; the large load is pressed on the bottom chain cutter, so that the power of the driving device is too large, and the chain cutter is easy to break; the descent speed is difficult to control; the cutter feeding amount of the bottom chain cutter is out of control, so that the cutter is easily damaged; to this end, we propose a sinking construction device for a fabricated underground structure to solve the above problems.

Disclosure of Invention

In view of the problems in the prior art, it is an object of the present invention to provide a sinking construction apparatus for a fabricated underground structure, which solves the above-mentioned problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the construction device of the underground assembly type building comprises a chain cutter excavating device, a hanging device and an assembly device, the building is assembled on the ground in a segmented mode through the construction device according to the length direction, the chain cutter excavating device comprises a chain cutter and a chain cutter driving device, the chain cutter comprises a chain and cutters mounted on the chain, the chain cutter is transversely enveloped outside the cross section of the building, the building comprises the chain cutter excavating device through the hanging device and is in a hanging state, the chain cutter driving device is started, the chain cutter at the bottom of the building excavates rock soil, the excavated rock soil is brought to the top through the chain cutter running from bottom to top, and sinking construction of the building is achieved.

As a further scheme of the invention: the building comprises a plurality of bottom plate modules, a middle plate module, a top plate module, a side wall module and an end wall module, and the building mainly comprises the following assembling steps:

1) firstly, all the bottom plate modules are in a suspension state through a hanging device, the bottom plate modules are connected into a whole through a tensioning device by adopting a tensioning method, and the bottom plate modules are placed on the ground;

2) then, the side wall modules, the end wall modules, the side wall modules and the end wall modules, the bottom plate modules and the side wall modules, and the bottom plate modules and the end wall modules at the bottom layer are connected into a whole by using bolt and nut pairs through an assembling device;

3) all the middle plate modules are in a suspended state through a hanging device, the middle plate modules are connected into a whole through a tensioning device by adopting a tensioning method, the middle plate modules are placed at the tops of the side wall modules and the end wall modules at the bottom layer, and the tops of the side wall modules and the end wall modules at the bottom layer are connected with the bottom of the middle plate modules into a whole through bolt and nut pairs;

4) completing the construction of all the middle layers except the top plate;

5) all the top plate modules are in a suspended state through the hanging device, the top plate modules are connected into a whole through the tensioning device by adopting a tensioning method, the top plate modules are placed at the tops of the top layer side wall modules and the end wall modules, the tops of the bottom layer side wall modules and the top of the end wall modules are connected into a whole with the bottom of the middle plate module through the bolt and nut pairs, and therefore the assembly of the building is completed.

As a further scheme of the invention: the hanging device comprises stranded wire lifting jacks, and the stranded wire lifting jacks synchronously and slowly lift.

As a further scheme of the invention: the building sinks to a set depth, and is in a critical state when the buoyancy of underground water to the building and the friction of rock soil to the building are equal to the self weight of the building including the chain cutter digging device, and the building is always in a suspended state in the sinking process by adding weight to the building, for example, pouring water into the building.

As a further scheme of the invention: the chain knife comprises a chain plate, the chain plate is arranged on the chain, and the knife is arranged on the chain plate.

As a further scheme of the invention: the chain cutter comprises a plurality of groups of tapered strip chain cutters, the cutters in the strip chain cutters comprise head cutters positioned at the front ends, middle cutters positioned in the middle and scraping plates positioned at the tail ends, the head cutters comprise long cutters, the middle cutters comprise two short cutters, the height of the scraping plates is slightly lower than that of the head cutters and the middle cutters, the head cutters and the middle cutters excavate rock soil, and the excavated rock soil is brought to the front by the scraping plates.

As a further scheme of the invention: when the chain cutter is used for excavating rock and soil, different geological conditions are met by controlling the descending speed of the hanging device, and when the chain cutter is worn, the chain cutter is replaced at the top.

As a further scheme of the invention: the building comprises an internal structure, the construction method of the building comprises a construction method A, a construction method B and a construction method C, the construction method A is used for constructing the internal structure after sinking, the construction method B is used for constructing the internal structure and then sinking, the construction method C is used for constructing part of the internal structure, and after sinking is carried out in place, the construction of all the internal structures is completed.

As a further scheme of the invention: the building comprises a lower section, a middle section and an upper section in the height direction, wherein the lower section, the middle section and the upper section are constructed in a segmented manner, and the middle section is assembled after the lower section sinks to a set depth; and after the middle section sinks to the set depth, assembling the upper section, and finally completing the section-by-section sinking of the building.

As a further scheme of the invention: the building sinks section by section, two ends of the building in the middle section comprise a wide end and a narrow section, and the narrow section sinking backwards is embedded in the wide end.

In conclusion, the technical scheme is that the main structure of the building is completely assembled on the ground, so that the construction speed of building ground construction is improved, and the environment of a construction site can be improved through modular assembly construction.

This technical scheme has adopted cable suspension device, and underground building's dead weight is balanced by cable suspension device, has following advantage: because the underground building is extremely heavy and cannot deviate, a deviation rectifying device is not needed; the dead weight of the underground building is not pressed on the chain cutter, so that the power of the driving device is small, the tension of the chain is small, and the chain is not easy to break; the descending speed is controllable; different geological conditions can be adapted by controlling the amount of feed.

Drawings

Fig. 1 is a structural schematic diagram of a building 1 which is cast in sections on the ground along the length direction through a casting device 23, wherein the casting device 23 adopts traditional concrete pumping equipment to convey concrete and adopts formwork support in the form of slip forms or fixed formworks and the like;

fig. 2 is a schematic structural view of a construction apparatus 2 for sinking a section of a building 1 that has been cast;

fig. 3 is a schematic structural view of the building 1 after being assembled on the ground, and the chain cutter excavating device 21 and the hanging device 22 are installed, and is also a schematic structural view of the chain cutter 3 and the chain cutter driving device 211 of the adjacent chain cutter excavating device 21 in a high-low layout;

FIG. 4 is a top view of FIG. 3;

fig. 5 is a schematic structural diagram of each bottom plate module 1A being respectively suspended by a steel strand lifting jack 4 and being movable in the horizontal direction, and the bottom plate modules 1A being connected into a whole by a tensioning device 231 using a tensioning method;

fig. 6 is a schematic structural view of the floor module 1A resting on the ground by the steel strand lifting jack 4;

FIG. 7 shows that the assembling device 23 hoists the side wall module 1D and the end wall module 1E through the hanging device 22, and all the side wall module 1D and the end wall module 1E are connected and fixed through a bolt and nut pair;

fig. 8 is a schematic structural diagram of the hanging device 22 in which all the middle plate modules 1B are in a hanging state, and steel strands are inserted and tensioned for anchoring;

fig. 9 is a schematic structural diagram of the middle plate module 1B, the side wall module 1D and the end wall module 1E connected integrally by bolts and nuts;

fig. 10 is a schematic structural view showing that all the roof modules 1C are suspended by the suspending device 22, and the steel strands are inserted and tensioned for anchoring;

FIG. 11 is a schematic structural view of the bottom side wall module 1D and the top end wall module 1E integrally connected with the bottom of the top plate module 1C by bolt and nut pairs;

fig. 12 is a schematic view of a part i of fig. 11 enlarged, and is also a schematic view of a structure in which the middle plate module 1B is placed on the bottom-layer side wall module 1D and is fixedly connected through a bolt-nut pair, and a concave-convex embedded interface is arranged in the middle to increase the connection strength and the waterproof effect;

fig. 13 is a schematic view of the chain blade 3 being an endless chain, and also a schematic view of the chain plate 33 being mounted on the chain 31 and the blade 32 being mounted on the chain plate 33;

fig. 14 is a schematic structural view of the strip-shaped chain cutter 5;

fig. 15 is a schematic structural diagram of the bottom 1A after pouring, the lower section 11 and the middle section 12 are installed on the bottom 1A, the chain cutter excavating device 21 is installed again, rock soil at the bottom of the building 1 is excavated, and the building sinks in sections;

fig. 16 is a schematic structural diagram of the chain cutter excavating device 21 being removed after the middle section 12 is sunk in place, the upper bottom section 13 being continuously mounted on the middle section 12, the chain cutter excavating device 21 being re-installed, the chain cutter driving device 211 being started, the chain cutter 3 excavating rock soil at the bottom, and the main structure of the section of the building beginning to sink;

fig. 17 is a schematic view of the construction of the building 1 with a middle section comprising a wide end 7 and a narrow section 8 at both ends;

FIG. 1 is a building; 1A is a bottom plate module, 1B is a middle plate module, and 1C is a top plate module; 1D is a side wall module; 1E is a headwall module; 11, a lower section; 12, a middle section; 13 is the upper section; 2 is a construction device; 21 is a chain cutter excavating device; 211 is a chain cutter driving device; 22 is a hanging device; 23 is an assembling device; 231 is a tensioning device; 3 is a chain cutter; 31 is a chain; 32 is a knife; 33 is a link plate; 4 is a steel strand lifting jack; 5 is a strip chain cutter; 51 is a head knife; 52 is an intermediate knife; 522 is a short knife; 53 is a squeegee; and 6 is an internal structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1 to 17, in the embodiment of the present invention, a construction device 2 of an underground prefabricated building 1 includes a chain cutter excavating device 21, a hanging device 22 and an assembling device 23, the building 1 is assembled on the ground by the construction device 2 in a segmented manner in a length direction, the chain cutter excavating device 21 includes a chain cutter 3 and a chain cutter driving device 211, the chain cutter 3 includes a chain 31 and a cutter 32 installed on the chain 31, the chain cutter 3 is laterally wrapped on the outer side of the cross section of the building 1, the building 1 including the chain cutter excavating device 3 is suspended by the hanging device 22, the chain cutter driving device 211 is started, the chain cutter 3 at the bottom of the building 1 excavates rock soil, and the chain cutter 3 running from bottom to top brings the excavated rock soil to the top, so as to implement sinking construction of the building 1.

As shown in fig. 1, the chain blade 3 and the chain blade driving device 211 of the adjacent chain blade excavating device 21 are arranged in a vertical direction, the suspending device 22 suspends the main structure of the building 1 through a space with a vertical offset, and the upper part of the suspending device 22 is supported on the ground through a portal frame.

As shown in fig. 5 to 12, the assembling device 23 includes a tensioning device 231, the building 1 includes a plurality of bottom plate modules 1A, a middle plate module 1B, a top plate module 1C, a side wall module 1D, and an end wall module 1E, and the building 1 mainly includes the following assembling steps in the height direction:

1) the floor modules 1A are connected into a whole by a tensioning method through a tensioning device 231 and the hanging device 22, and the floor modules 1A are placed on the ground;

2) hoisting the bottom side wall modules 1D and the end wall modules 1E in place respectively through an assembling device 23, and then connecting the bottom side wall modules 1D, the end wall modules 1E, the side wall modules 1D and the end wall modules 1E, the bottom plate modules 1A and the side wall modules 1D, and the bottom plate modules 1A and the end wall modules 1E into a whole by using bolt and nut pairs to complete the installation of the bottom side wall modules 1D and the end wall modules 1E;

3) the middle plate module 1B is in a suspension state through the hanging device 22, the middle plate module 1B is connected into a whole through the tensioning device 231 by adopting a tensioning method, the middle plate module 1B is placed at the top of the side wall module 1D and the end wall module 1E at the bottom layer, the top of the side wall module 1D and the top of the end wall module 1E at the bottom layer and the bottom of the middle plate module 1B are connected into a whole through a bolt and nut pair, and the middle plate module 1B is installed.

4) Finishing the construction of the middle layer of the section except the top plate;

5) the roof module 1C is in a suspension state through the hanging device 22, the roof module 1C is connected into a whole through the tensioning device 231 by adopting a tensioning method, the roof module 1C is placed at the tops of the top-layer side wall module 1D and the end wall module 1E, the tops of the bottom-layer side wall module 1D and the end wall module 1E are connected into a whole with the bottom of the middle plate module 1B by using a bolt and nut pair, and therefore the assembly of the section of the building 1 in the height direction is completed.

It should be noted that: the bottom plate module 1A, the middle plate module 1B and the top plate module 1C can also be connected by bolt and nut pairs without using a stretching method or using a mixture of the two.

As shown in fig. 11, the hanging device 22 includes a steel strand lifting jack 4, the steel strand lifting jack 4 is lifted synchronously and slowly, the steel strand lifting jack 4 adopts a hydraulic lifter with a core-through structure as a lifting machine, wedge-shaped anchors at two ends of the hydraulic lifter have a one-way self-locking function, when the anchors work tightly, the steel strands can be locked automatically, when the anchors do not work and loosen, the steel strands are released, the steel strands can move up and down, the building 1 can sink integrally and synchronously in a hanging state, and due to the huge dead weight of the building, the building is difficult to deviate, and other deviation rectifying devices do not need to be arranged.

It should be noted that: the lower wall 1A may also be considered as a cover for the chain cutter 3, and the upper wall 11B may be devoid of a chain cutter cover.

The building 1 sinks to a set depth, and is in a critical state when the buoyancy of groundwater to the building 1 and the friction of rock soil to the building 1 are equal to the self weight of the building 1 including the chain cutter digging device 3, and the building 1 is always in a suspended state in the sinking process by adding weight to the building 1, for example, pouring water into the building 1.

As shown in fig. 13, the chain blade 3 includes a link plate 33, the link plate 33 is mounted on the chain 31, and the blade 32 is mounted on the link plate 33.

As shown in fig. 14, the chain blade 3 includes several groups of tapered chain blades 5, the blades 32 of the chain blades 5 include a head blade 51 at the front end, a middle blade 52 at the middle end, and a scraper blade 53 at the rear end, the head blade 51 includes a long blade 511, the middle blade 52 includes two short blades 522, the height of the scraper blade 53 is slightly lower than the height of the head blade 51 and the middle blade 52, the head blade 51 and the middle blade 52 excavate the rock soil, and the scraper blade 53 brings the excavated rock soil to the front.

The following are required to be explained: assuming that the width of each group of chain cutters is B, the pitch of the chain is T, n middle cutters 52 are provided, and the length of the short cutter 522 is a, the length of the long cutter 511 is 2a, B = (2 n + 1) a, and the length of each group of strip-shaped chain cutters 5 is equal to (n + 2) T, so that the lengths of the cutters 32 for cutting rock and soil on each link plate 33 can be equal.

When the chain cutter 3 excavates rock soil, different geological conditions are met by controlling the descending speed of the hanging device 22, and when the cutter 32 is worn, the cutter is replaced at the top; when encountering the cobblestones and the boulders, the cobblestones and the boulders are scraped with the knives 32 by an extremely slow descending speed.

The building 1 comprises an internal structure 6, the construction method of the building 1 comprises a construction method A, a construction method B and a construction method C, the construction method A is used for constructing the internal structure 6 after sinking, the construction method B is used for implementing sinking after the construction of the internal structure 6 is completed, the construction method C is used for completing the construction of part of the internal structure 6, and after the implementation of sinking in place, the construction of the whole internal structure 6 is completed.

The building 1 is completely assembled and then integrally sunk.

The building 1 comprises a lower section 11, a middle section 12 and an upper section 13 in the height direction, wherein the lower section 11, the middle section 12 and the upper section 13 are constructed in a segmented mode, and the middle section 12 is assembled after the lower section 11 sinks to a set depth; after the middle section 12 sinks to a set depth, the upper section 13 is assembled, and finally the section-by-section sinking of the building 1 is completed.

The building 1 sinks section by section, two ends of the building 1 in the middle section comprise a wide end 7 and a narrow section 8, and the narrow section 8 sinking backwards is embedded in the wide end 7.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the convenience of description of the present invention and for simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the present invention should not be construed as being limited thereto, and it should be noted that the terms "mounted" and "connected" should be interpreted broadly, for example, as being able to be fixedly connected, detachably connected, or integrally formed, mechanically connected or indirectly connected through an intermediate, and the specific meaning of the terms in the invention can be understood through specific situations.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A sinking construction device for an assembly type underground building is characterized in that a construction device (2) of the assembly type underground building (1) comprises a chain cutter excavating device (21), a hanging device (22) and an assembly device (23), the building (1) is assembled on the ground in a segmented mode through the construction device (2) in the length direction, the chain cutter excavating device (21) comprises a chain cutter (3) and a chain cutter driving device (211), the chain cutter (3) comprises a chain (31) and a cutter (32) installed on the chain (31), the chain cutter (3) is transversely enveloped outside the cross section of the building (1), the chain cutter driving device (211) is started when the building (1) comprising the chain cutter excavating device (3) is in a suspension state through the hanging device (22), the chain cutter (3) at the bottom of the building (1) excavates rock soil, and the excavated rock soil is brought to the upper side by the chain cutter (3) which runs from bottom to top, the sinking construction of the building (1) is realized.

2. A sinking construction unit for an assembled underground structure according to claim 1, wherein the assembly means (23) comprises tensioning means (231), the structure (1) comprises a plurality of floor modules (1A), middle plate modules (1B), roof modules (1C), side wall modules (1D) and end wall modules (1E), and the main assembly steps of the structure (1) in the height direction are as follows:

1) the floor module (1A) is firstly in a suspension state through the hanging device (22) and is connected into a whole through the tensioning device (231) by adopting a tensioning method, and the floor module (1A) is placed on the ground;

2) respectively hoisting the side wall modules (1D) and the end wall modules (1E) of the bottom layer in place through an assembling device (23), and then connecting the side wall modules (1D) of the bottom layer, the end wall modules (1E), the side wall modules (1D) and the end wall modules (1E), the bottom plate modules (1A) and the side wall modules (1D) and the bottom plate modules (1A) and the end wall modules (1E) into a whole by using bolt and nut pairs to finish the installation of the side wall modules (1D) and the end wall modules (1E) of the bottom layer;

3) the middle plate module (1B) is in a suspended state through a hanging device (22), the middle plate module (1B) is connected into a whole through a tensioning device (231) by adopting a tensioning method, the middle plate module (1B) is placed at the tops of the side wall module (1D) and the end wall module (1E) at the bottom layer, the tops of the side wall module (1D) and the end wall module (1E) at the bottom layer are connected into a whole with the bottom of the middle plate module (1B) through a bolt and nut pair, and the middle plate module (1B) is installed;

4) finishing the construction of the middle layer of the section except the top plate;

5) the roof module (1C) is in a suspended state through the hanging device (22), the roof module (1C) is connected into a whole through the tensioning device (231) by adopting a tensioning method, the roof module (1C) is placed at the tops of the top-layer side wall module (1D) and the end wall module (1E), the tops of the bottom-layer side wall module (1D) and the end wall module (1E) are connected into a whole with the bottom of the middle plate module (1B) through the bolt and nut pair, and therefore assembly of the building (1) in the height direction is completed.

3. A sinking construction unit for an assembled underground structure according to claim 2, wherein the suspending means (22) comprises a plurality of lifting jacks (4), and the plurality of lifting jacks (4) are synchronously and slowly lifted.

4. A sinking construction unit for an assembled underground building according to claim 3, wherein the building (1) sinks to a predetermined depth, and is in a critical state when the buoyancy of underground water against the building (1) and the friction of rock soil against the building (1) are equal to the self weight of the building (1) including the chain cutter excavating device (3), and the building (1) is always in a suspended state during the sinking process by adding weight to the building (1), for example, by pouring water into the building (1).

5. A sinking construction unit for a fabricated underground structure according to claim 4, wherein the chain cutter (3) comprises a chain plate (33), the chain plate (33) is installed on the chain (31), and the cutter (32) is installed on the chain plate (33).

6. A sinking construction unit for an assembled underground structure according to claim 5, wherein the chain cutter (3) comprises a plurality of sets of tapered chain cutters (5), the cutters (32) of the chain cutters (5) comprise a head cutter (51) at a front end, a middle cutter (52) at a middle end and a scraper (53) at a rear end, the head cutter (51) comprises a long cutter (511), the middle cutter (52) comprises two short cutters (522), the height of the scraper (53) is slightly lower than the height of the head cutter (51) and the middle cutter (52), the head cutter (51) and the middle cutter (52) excavate the ground, and the scraper (53) brings the excavated ground to the front.

7. A sinking construction unit for an assembled underground structure according to claim 6, wherein the chain cutter (3) is adapted to meet different geological conditions by controlling a descending speed of the hanger (22) when excavating the soil, and is replaced at the top when the cutter (32) is worn.

8. The sinking construction equipment for the fabricated underground building as claimed in claim 7, wherein the building (1) comprises the inner structure (6), the construction method of the building (1) comprises a construction A method, a construction B method and a construction C method, the construction A method is to finish the sinking and then construct the inner structure (6), the construction B method is to finish the construction of the inner structure (6) and then to carry out the sinking, the construction C method is to finish the construction of part of the inner structure (6) and to finish the construction of the whole inner structure (6) after the sinking is in place.

9. The sinking construction unit for the fabricated underground building according to claim 8, wherein the building (1) comprises a lower section (11), a middle section (12) and an upper section (13) in a height direction, the lower section (11), the middle section (12) and the upper section (13) are constructed in stages, and after the lower section (11) is sunk to a set depth, the middle section (12) is assembled; and after the middle section (12) sinks to a set depth, assembling the upper section (13), and finally completing the stage-by-stage sinking of the building (1).

10. A sinking construction unit for an assembled underground structure according to claim 8 or 9, c h a r a c t e r i z e d in that the structure (1) is sunk section by section, the middle section of the structure (1) comprising a wide end (7) and a narrow section (8) at both ends, the narrow section (8) sunk behind being embedded in the wide end (7).

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